Home / 3,103.12-4,277.88-2,218.60

Finding the Fourth Proportional to 3,103.12, 4,277.88 and 2,218.60

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Solution

The fourth proportional to 3,103.12, 4,277.88 and 2,218.60 is: 3,058.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,103.12 : 4,277.88 = 2,218.60 : x
  2. Step 2: Convert to fraction form
    3,103.12/4,277.88 = 2,218.60/x
  3. Step 3: Cross multiply
    3,103.12x = 4,277.88 × 2,218.60
  4. Step 4: Simplify right side
    3,103.12x = 9,490,904.57
  5. Step 5: Solve for x
    x = 9,490,904.57/3,103.12
  6. Step 6: Final answer
    x = 3,058.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.